Period ? 🤔 spotting or period ?

Tashy 🌈 ✨ • Ttc for 3 years , 3 failed iui cycles , 2 Early miscarriages thru IVF 😖 , 1 chemical , rainbow baby coming 2021 🌈 ✨MANIFESTING ✨

So around 11-13 DPO I had VERY light spotting with pink in it one was a day for those three days then it went away , I’ve been taking pregnancy tests but NEGATIVE !! And I am now 18DPO and still no period nor BFP